import {
  Card,
  Breadcrumb,
  Form,
  Button,
  Radio,
  Input,
  Upload,
  Space,
  Select, message
} from 'antd'
import { PlusOutlined } from '@ant-design/icons'
import { Link, useSearchParams } from 'react-router-dom'
import './index.scss'

import ReactQuill from "react-quill";
import 'react-quill/dist/quill.snow.css'
import { useEffect, useState } from "react";
import { createArticleAPI, getArticleById, getChannelAPI, updateArticleAPI } from "@/apis/article";

const { Option } = Select

const Publish = () => {
  // 1. 获取频道列表
  let [channelList, setChannelList] = useState([])
  useEffect(() => {
    // 1. 封装函数 在函数体内调接口
    const getChanelList = async () => {
      const res = await getChannelAPI()
      setChannelList(res.data.channels)
    }
    // 2. 调用方法
    getChanelList()
  }, []);

  // 3. 提交表单
  const onFinish = (formValue) => {
    console.dir(formValue)

    // 校验封面类型imageType是否和实际的imageList数量是相等的
    if (imageList.length !== imageType) return message.warning('封面类型和图片数量不匹配')
    const { title, content, channel_id } = formValue
    // 处理表单数据
    const reqData = {
      title,
      content,
      cover: {
        type: imageType,  // 当前的封面模式
        images: imageList.map(item => {
          if (item.response) {
            return item.response.data.url
          } else {
            return item.url
          }
        })
      },
      channel_id
    }
    // 调接口提交数据
    if (articleId) {
      updateArticleAPI({ ...reqData, id: articleId })   // 更新接口
      message.success('更新成功')
    } else {
      createArticleAPI(reqData)  // 没有id则是新增
      message.success('发布成功')
    }
  }

  // 上传回调
  let [imageList, setImageList] = useState([])
  const onChange = (value) => {
    console.log('上传中...', value)
    setImageList(value.fileList)
  }

  // 切换图片封面类型
  let [imageType, setImageType] = useState(0)
  const onTypeChange = (e) => {
    console.dir(e.target.value)
    setImageType(e.target.value)
  }

  // 文章详情-数据回填
  let [searchParams] = useSearchParams()
  let articleId = searchParams.get('id')  // 获取路由传参
  // 获取form实例
  const [form] = Form.useForm()
  console.log('id', articleId)
  useEffect(() => {
    // 1. 通过id获取数据
    async function getArticleDetail() {
      const res = await getArticleById(articleId)
      const data = res.data
      //form.setFieldsValue(data)
      form.setFieldsValue({
        ...res.data,
        type: res.data.cover.type
      })

      // 回填图片列表
      setImageType(res.data.cover.type)
      // 显示图片
      setImageList(res.data.cover.images.map(url=> {
        return { url }
      }))
    }
    // 只有有id的时候才调用此函数获取数据并回填
    if (articleId) getArticleDetail();
  }, [articleId, form]);

  return (
    <div className="publish">
      <Card
        title={
          <Breadcrumb items={[
            { title: <Link to={'/'}>首页</Link> },
            { title: `${articleId ? '编辑' : '发布'}文章` },
          ]}
          />
        }
      >
        <Form
          labelCol={{ span: 4 }}
          wrapperCol={{ span: 16 }}
          initialValues={{ type: 0 }}
          onFinish={onFinish}
          form={form}
        >
          <Form.Item
            label="标题"
            name="title"
            rules={[{ required: true, message: '请输入文章标题' }]}
          >
            <Input placeholder="请输入文章标题" style={{ width: 400 }} />
          </Form.Item>
          <Form.Item
            label="频道"
            name="channel_id"
            rules={[{ required: true, message: '请选择文章频道' }]}
          >
            <Select placeholder="请选择文章频道" style={{ width: 400 }}>
              {/* value 属性，用户选择以后会自动收集起来，作为接口提交字段 */}
              { channelList.map(item => <Option value={item.id} key={item.id}>{ item.name }</Option>) }
            </Select>
          </Form.Item>

          <Form.Item label="封面">
            <Form.Item name="type">
              <Radio.Group onChange={onTypeChange}>
                <Radio value={1}>单图</Radio>
                <Radio value={3}>三图</Radio>
                <Radio value={0}>无图</Radio>
              </Radio.Group>
            </Form.Item>
            {/*  listType: 决定选择文件框的外观样式  */}
            {/*  showUploadList: 控制显示上传列表  */}
            { imageType > 0 && <Upload
              listType="picture-card"
              showUploadList
              action={'http://geek.itheima.net/v1_0/upload'}
              name='image'
              onChange={onChange}
              maxCount={imageType}
              fileList={imageList}
            >
              <div style={{ marginTop: 8 }}>
                <PlusOutlined />
              </div>
            </Upload>}

          </Form.Item>


          <Form.Item
            label="内容"
            name="content"
            rules={[{ required: true, message: '请输入文章内容' }]}
          >
            {/*  富文本编辑器  */}
            <ReactQuill className="publish-quill" theme="snow" placeholder="请输入文章内容"></ReactQuill>
          </Form.Item>

          <Form.Item wrapperCol={{ offset: 4 }}>
            <Space>
              <Button size="large" type="primary" htmlType="submit">
                发布文章
              </Button>
            </Space>
          </Form.Item>
        </Form>
      </Card>
    </div>
  )
}

export default Publish
